Re: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info

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On Sun, 2007-02-25 at 11:26 +0100, Giuseppe Bilotta wrote:
> On 2/24/07, Antonino A. Daplas <[email protected]> wrote:
> > On Sat, 2007-02-24 at 10:16 +0100, Giuseppe Bilotta wrote:
> > >
> > > Keep in mind that setting nvidiafb to totally ignore the EDID (either
> > > by not compiling in EDID support or by using e.g. the ignoreedid patch
> > > I had proposed) the snow effect is extremely reduced,
> >
> > I did not know that, just scanned the entire thread. Try this patch, it
> > makes use of fb_ddc_read*() which I believe has extra steps to prevent
> > display corruption.  It also incorporates Luca's i2c fix.
> 
> Applied. No noticeable difference, in the sense that the EDID debug
> output is still the same and so is the snow effect.
> 

Here's a temporary workaround:

In drivers/video/nvidia/nv_i2c.c:nvidia_probe_i2c_connector(),comment
this out:

	if (par->chan[conn - 1].par)
		edid = fb_ddc_read(&par->chan[conn - 1].adapter);

and make sure CONFIG_FIRMWARE_EDID=y.

Tony

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